Thomas gore



MCM ATTRNEY Jan. 17, 192so T. GORE,

WIRE ROPE Filed Feb. l2, 1927 INVENTR V7/vw lill Patented dan. l?, i928.

THOMAS GORE, 0F BROOKLYN', NEW YRK.

WIRE ROPE.

Application ed February 12, 1927. Serial No. 167,614.

This invention relates generally to wire ropes, particularly those thatare subject to severe duty and to the action of solutions that may beabsorbed during its use, an eX- ample of suoli ropes being those thatare employed in drilling oil wells whether by the rotary `or beamstandard systems.

The main object of this invention is to obtain increased life of serviceof the rope by eliminating the cause of high, low and sunken strands, toreduce the uneven surface of the rope at the point or points where saidrope bisects itself in winding one layer over another under extremestresses of load, and 'to minimize internal corrosion of said rope. l Tothis end the invention consists of the interposition of an elasticmetallic member between the core and the outer strands.

Fig. l is a view in side elevation of a rope, with parts broken away,showing one embodiment of the invention.

Fig. 2 is a cross sectional view substantially onthe line 9.-2 of Fig.l.

Figs. 3, 4 and 5 are views similar to Fig. showing modiiied forms of theinvention.

,ln the form in which the invention is disclosed in Figs. l and 2, thereference character l indicates a strand constituting a cords-aid strandpreferably consisting of round wires 2. 3 indicate outer strands, eachpreferably composed of twisted wires fl, laid around the core.interposed between the core and the outer strands is a metallic elasticmember here taking the form of one or more itat-rolled or drawn wires 5laid helically around the core. Member 5 is pref orably of softermaterial than the wires of the outer strands.

lt will be understood that, by this construction, abrasion between thecore and the high tensile strength wires of the outer strands isprevented, and also that there can be no collapsing of the core such asis 'frequently the case when an alldiber core Ais employed, thiscollapsing resulting in sunken spots on the rope. Further, theinterposed metallic member will not absorb or harbor solutions in whichthe rope may become immersed. Such solutions frequently containsulphuric acid or other deleterious matter' and if a fiber member shouldbe used between the core and the outer strands such iiber member wouldabsorb and then give off such solutions and set up a serious corrosiveaction.

The metallic elastic member really has the action of a spring and willreadily contract or expand in harmony with the impact or drillingoperation in which the rope is used, and will, as a matter of fact,assist such action because a pulsation is really set up in the rope byreason of its presence and this will facilitate theI drilling operation.This metallic elastic member may consist of a single layer offlat-rolled wire as shown in Fig. 2, or, as shown in Fig. 3, it mayconsist of several such layers 5 and 5a, and it will be understood thateach layer may consist of one or more wires laid side by side.

The lay of the rope may either bey Lang lay or regular lay as may bedesired.

In Fig. fl is shown a modiiication in which the core has a iibrouscenter o surrounded by small strands T and in Fig. 5 the core iscomposed of a fibrous center 6 surrounded by a single layer of wires 8.ln all forms of the invention the core is therefore at least providedwith an outer covering ofA wires and as shown in Figs. l to 3, the coremay be of wires throughout@ l claim:

l. A rope comprising: a strand, having a metallic covering, constitutinga core, a plurality of outer strands, each composed of twisted wires,laid around the core, and ilat wire, constituting an elastic member andsofter than the wires of the outer strands, interposed between the outerstrands and the core and laid helically around'the latter.

2. A' rope comprising: a strand, composed of round wires, constituting acore, a ijilurality of outer strands, each composed of twisted wires,laid around the core, and flat wire, constituting an elastic member andsofter than the wires of the outer strands, interposed between the outerstrands and the core and laid helically around the latter.

Signed at New York, in the borough of Manhattan, county of New York, andState of New York, this 10th day of February,

THMAS GORE.

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